Smoking pipe



May 12, 1936. A. B. MODINE 2,040,704

SMOKING PIPE Filed Feb. 1, 1934 Patented May 12, 1936 UNITED STATES PATENT OFFICE 3 Claims.

My invention relates to improvements in tobacco pipes, and more particularly to a pipe designed to efliciently cool the smoke passing through the same so as to render the same pleasing to the taste and avoid burning of the tongue and mouth, as well as to filter the smoke and remove moisture as well as to prevent the passage of slugs from the pipe into the mouth of the user and to absorb moisture flowing from the mouth into the stem.

The invention has among its objects the production of a device of the kind described with the above objects, which pipe is simple, inexpensive, convenient, compact, durable, reliable, satisfactory, attractive and eiiicient.

The same has as a further object the production of a pipe which may be easily and thoroughly cleaned and maintained in a clean and sanitary healthful condition. It also has as an object the production of a pipe with the objects set forth which will draw easily and freely and not plug up.

Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the art from the disclosure herein given.

To this end my invention consists in the novel construction, arrangement and combination of parts herein shown and described, and more particularly pointed out in the claims. I

In the drawing, wherein like reference characters indicate like or corresponding parts:

Fig. 1 is a sectional view through a pipe embodying one form of my invention; a Fig.2 is an enlarged sectional view showing a portion of the stem;

Fig. 3 is a sectional view taken substantially on line 3-3 of Fig. 2; and

Fig. 4 is a side view of an inner shell in which the lengthwise corrugations are extended spirally.

Referring to the drawing, the pipe consists of a bowl I provided with a tobacco chamber 2 am with a bore 3 for the passage of smoke. The stem consists of outer and inner shells or tubes 4 and Ill. The outer tube 4 is provided with an end 5 adapted to seat in a socket in the pipe bowl and is swedged at the opposite end as indicated at 6 and provided with a mouthpiece 1 of hard rubber,

amber or any other suitable material through which extends the bore 8. The two tubes 4 and N are preferably suitably corrugated, one preferably lengthwise, either straight or spirally, and theother circumferentially. In the embodiment illustrated the outer tube or shell 4 is shown corrugated circumferentially as indicated at 9 so" as to provide a plurality of what may be termed fins so that the surface area. is considerable without requiring a long stem or stem of unreasonable diameter. The inner tube or shell is preferably corrugated lengthwise either spirally, as shown in Fig. 4, or as indicated at H in Figs. 1, 2, and 3, openings or apertures J2 being provided through the walls of the same. The interior of the inner shell or tube is packedwith a suitable filtering and absorbent material, as for example cotton, felt, absorbent paper or such other absorbent material as may be found satisfactory for the purpose.

In use the parts of the stem and the pipe are assembled substantially as shown inthe drawing. Smoke drawn from the bowl through the stem by drawing on the mouthpiece passes into the stem and along the corrugations in the inner tube between the two shells. As it passes through it is exposed to the corrugations in the outer shell and thoroughly cooled and to some extent agitated. With the shell 10 shown in Fig. 4, it" has a swirling movement throwing it against the cooling corrugations or fins. Moisture passing through the stem is absorbed by the fibrous material in the inner stem, either from the bowl end of the inner shell or drawn through the openings 12 by capillary attraction. As shown in Fig. 3, some of the strands of fibrous material may project'into the space between the tubes, picking up moisture and facilitating its absorption by the material in tube II. If desired, the, fibrous materials may be medicated. To clean the pipe it is only necessary to remove the bowl from the end of the stem and remove the inner shell, thoroughly clean the parts and perhaps replace the absorbent material in the inner stem. If desired, a finger piece or hook-like part [6 may be provided onthe inner shell to facilitate the withdrawal; of the same from the outer shell. The piecesiwill go for long periods without cleaning and remain fresh an'd clean. The smoke drawn into the mouth is thoroughly cooled and due to the large surface area between the tubes the moisture is removed to a very large extent. By employing a metallic outer tube the heat transfer is rapid and the heat quickly dissipated from the smoke. A cool, dry smoke is therefore always obtainable. Any moisture or saliva flowing into the stem from the stem end will likewise be absorbed by the absorbent material at the mouthpiece end of the stem and being. so absorbed, will not be readily drawn back into the mouth again, nor drain into the pipe bowl.

Having thus described my invention, it is ob- Viol 1s that variousimmaterial modifications may be made in the same without departing from the spirit of my invention; hence I do not wish to be understood as limiting myself to the exact form, construction, arrangement and combination of parts herein shown and described, or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

1. A tobacco pipe comprising a bowl, a stem therefor consisting of inner and outer shells contacting with each other and provided with intersecting corrugations disposed to provide communicating passage-ways through the stem from end to end, and means on said inner shell for facilitating the removal thereof from said outer shell.

2. A tobacco pipe comprising a bowl, a stem therefor consisting of an outer shell and an inner shell fitting substantially close together, the outer shell being of substantially uniform thickness and having a plurality of outwardly and circumferentially extending corrugations constituting fins, and the inner'shell having inwardly disposed corrugations extending from end to end to protion of the shells.

vide communicating passage-ways between the two shells, and a finger piece operatively related to said inner shell for facilitating the separation therefor consisting of an outer shell and an inner shell open at its extreme oppositeend's and fitting substantially close to said outer shell, the material of said outer shell of substantially uniform thickness and having a plurality of outwardly and circumferentially extending corrugations constituting fins and the inner shell having inwardly disposed corrugations extending from end to end to provide communicating passage-ways between the two shells, a filling of absorbent material positioned within the inner shell, said inner shell provided with apertures through the wall of the same to provide communication between said passage-ways and said absorbent material, and a hook-like part on said inner shell and normally within said outer shell for facilitating the separa- ARTHUR B. IMODINE. 

